Added Xcode5 Compatibility

Fixed XCode 5 Toolchain Compatibility (works in XCode & Rake).

More notable changes:
 - Based off of pivotal/xcode5-compat
 - Created a new Mac OS X App for Mac Test Bundle running (the "Official" way to run test bundles via command line).
 - Added ivars for older SDKs
 - Rakefile cat's the build log file if it fails (useful for debugging travis-ci failures)
 - Added explicit architectures
 - Added pragma warning supression for NS_ROOT_CLASS.

When this is accepted. I'll start on the other bugs.